e1000e: cleanup several stats issues

Several stats registers are completely unused and we just waste pci
bus time reading them. We also omit using the high 32 bits of the GORC/
GOTC counters. We can just read clear them and only read the low registers.

Mii-tool can also break es2lan if it executes a MII PHY register
ioctl while the device is in autonegotiation. Unfortunately it seems
that several applications and installations still perform this ioctl
call periodically and especially in this crucial startup time. We
can fool the ioctl by providing fail safe information that mimics
the "down" link state and only perform the dangerous PHY reads once
after link comes up to fill in the real values. As long as link
stays up the information will not change.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/net/e1000e/es2lan.c b/drivers/net/e1000e/es2lan.c
index d59a99ae44b..13a6f4484de 100644
--- a/drivers/net/e1000e/es2lan.c
+++ b/drivers/net/e1000e/es2lan.c
@@ -1231,12 +1231,10 @@ struct e1000_info e1000_es2_info = {
         .mac                    = e1000_80003es2lan,
         .flags                  = FLAG_HAS_HW_VLAN_FILTER
                                   | FLAG_HAS_JUMBO_FRAMES
-                                  | FLAG_HAS_STATS_PTC_PRC
                                   | FLAG_HAS_WOL
                                   | FLAG_APME_IN_CTRL3
                                   | FLAG_RX_CSUM_ENABLED
                                   | FLAG_HAS_CTRLEXT_ON_LOAD
-                                  | FLAG_HAS_STATS_ICR_ICT
                                   | FLAG_RX_NEEDS_RESTART /* errata */
                                   | FLAG_TARC_SET_BIT_ZERO /* errata */
                                   | FLAG_APME_CHECK_PORT_B